How much work will a machine with a power rating of 1.1 * 103 watts do in 2.0 hours?

A. 1.5 * 106 joules

B. 2.1 * 106 joules

C. 4.0 * 106 joules

D. 8.1 * 106 joules

7.92*10^6Joules

Explanation:

Power is defined as the rate of change in work done. Mathematically, Power = Workdone/Time

Given power = 1.1*10³watts

Time = 2.0hours = 2*60*60

= 7,200seconds

Workdone = power * time

Work done = 1.1*10³*7200

Workdone = 7,920,000Joules

= 7.92*10^6Joules

D.

Explanation:

8.1X10 to the power of 6 Joules.